| Abstract: | Eight identical flavonoids were isolated from the alcoholic extract of the pollen of Typha davidiana Hand.-Mazz., Typha latifolia L. and Typha angustata Bory et Chaub. On the basis of spectroscopic (IR, UV, MS and NMR) analysis and the identification of the acidic hydrolytic products, they were identified as naringenin (Ⅰ), isorhamnetin (Ⅱ), quercetin (Ⅲ), isorhamnetin-3-O-(2G-α-L-rhamnopyrano-syl)-rutinoside(Ⅳ), quercetin-3-O-(2G-α-L-rhamnopyranosyl)-rutinoside (Ⅴ), iso-rhamnetin-3-O-rutinoside (Ⅵ),isorhamnetin-3-O-neohesperidoside (Ⅶ), kampferol-3-O-neohesperidoside (Ⅷ). Compound Ⅴ was found in this genus for the first time. |
